/*
* jQuery Media Plugin for converting elements into rich media content.
*
* Examples and documentation at: http://malsup.com/jquery/media/
* Copyright (c) 2007-2010 M. Alsup
* Dual licensed under the MIT and GPL licenses:
* http://www.opensource.org/licenses/mit-license.php
* http://www.gnu.org/licenses/gpl.html
*
* @author: M. Alsup
* @version: 0.99 (05-JUN-2013)
* @requires jQuery v1.1.2 or later
* $Id: jquery.media.js 2460 2007-07-23 02:53:15Z malsup $
*
* Supported Media Players:
*        - Flash
*        - Quicktime
*        - Real Player
*        - Silverlight
*        - Windows Media Player
*        - iframe
*
* Supported Media Formats:
*         Any types supported by the above players, such as:
*         Video: asf, avi, flv, mov, mpg, mpeg, mp4, qt, smil, swf, wmv, 3g2, 3gp
*         Audio: aif, aac, au, gsm, mid, midi, mov, mp3, m4a, snd, rm, wav, wma
*         Other: bmp, html, pdf, psd, qif, qtif, qti, tif, tiff, xaml
*
* Thanks to Mark Hicken and Brent Pedersen for helping me debug this on the Mac!
* Thanks to Dan Rossi for numerous bug reports and code bits!
* Thanks to Skye Giordano for several great suggestions!
* Thanks to Richard Connamacher for excellent improvements to the non-IE behavior!
*/
/*global SWFObject alert Sys */
/*jshint forin:false */
;(function($) {
"use strict";        

var mode = document.documentMode || 0;
var msie = /MSIE/.test(navigator.userAgent);
var lameIE = msie && (/MSIE (6|7|8)\.0/.test(navigator.userAgent) || mode < 9);

/**
* Chainable method for converting elements into rich media.
*
* @param options
* @param callback fn invoked for each matched element before conversion
* @param callback fn invoked for each matched element after conversion
*/
$.fn.media = function(options, f1, f2) {
        if (options == 'undo') {
                return this.each(function() {
                        var $this = $(this);
                        var html = $this.data('media.origHTML');
                        if (html)
                                $this.replaceWith(html);
                });
        }
        
        return this.each(function() {
                if (typeof options == 'function') {
                        f2 = f1;
                        f1 = options;
                        options = {};
                }
                var o = getSettings(this, options);
                // pre-conversion callback, passes original element and fully populated options
                if (typeof f1 == 'function') f1(this, o);

                var r = getTypesRegExp();
                var m = r.exec(o.src.toLowerCase()) || [''];
                var fn;

                if (o.type)
                        m[0] = o.type;
                else
                        m.shift();

                for (var i=0; i < m.length; i++) {
                        fn = m[i].toLowerCase();
                        if (isDigit(fn[0])) fn = 'fn' + fn; // fns can't begin with numbers
                        if (!$.fn.media[fn])
                                continue; // unrecognized media type
                        // normalize autoplay settings
                        var player = $.fn.media[fn+'_player'];
                        if (!o.params) o.params = {};
                        if (player) {
                                var num = player.autoplayAttr == 'autostart';
                                o.params[player.autoplayAttr || 'autoplay'] = num ? (o.autoplay ? 1 : 0) : o.autoplay ? true : false;
                        }
                        var $div = $.fn.media[fn](this, o);

                        $div.css('backgroundColor', o.bgColor).width(o.width);
                        
                        if (o.canUndo) {
                                var $temp = $('<div></div>').append(this);
                                $div.data('media.origHTML', $temp.html()); // store original markup
                        }
                        
                        // post-conversion callback, passes original element, new div element and fully populated options
                        if (typeof f2 == 'function') f2(this, $div[0], o, player.name);
                        break;
                }
        });
};

/**
* Non-chainable method for adding or changing file format / player mapping
* @name mapFormat
* @param String format File format extension (ie: mov, wav, mp3)
* @param String player Player name to use for the format (one of: flash, quicktime, realplayer, winmedia, silverlight or iframe
*/
$.fn.media.mapFormat = function(format, player) {
        if (!format || !player || !$.fn.media.defaults.players[player]) return; // invalid
        format = format.toLowerCase();
        if (isDigit(format[0])) format = 'fn' + format;
        $.fn.media[format] = $.fn.media[player];
        $.fn.media[format+'_player'] = $.fn.media.defaults.players[player];
};

// global defautls; override as needed
$.fn.media.defaults = {
        standards: true, // use object tags only (no embeds for non-IE browsers)
        canUndo: true, // tells plugin to store the original markup so it can be reverted via: $(sel).mediaUndo()
        width:                400,
        height:                400,
        autoplay:        0,                        // normalized cross-player setting
        bgColor:        '#ffffff',        // background color
        params:                { wmode: 'transparent'},        // added to object element as param elements; added to embed element as attrs
        attrs:                {},                        // added to object and embed elements as attrs
        flvKeyName: 'file',                // key used for object src param (thanks to Andrea Ercolino)
        flashvars:        {},                        // added to flash content as flashvars param/attr
        flashVersion:        '7',        // required flash version
        expressInstaller: null,        // src for express installer

        // default flash video and mp3 player (@see: http://jeroenwijering.com/?item=Flash_Media_Player)
        flvPlayer:         'mediaplayer.swf',
        mp3Player:         'mediaplayer.swf',

        // @see http://msdn2.microsoft.com/en-us/library/bb412401.aspx
        silverlight: {
                inplaceInstallPrompt: 'true', // display in-place install prompt?
                isWindowless:                 'true', // windowless mode (false for wrapping markup)
                framerate:                         '24',         // maximum framerate
                version:                         '0.9', // Silverlight version
                onError:                         null,         // onError callback
                onLoad:                         null, // onLoad callback
                initParams:                         null,         // object init params
                userContext:                 null         // callback arg passed to the load callback
        }
};

// Media Players; think twice before overriding
$.fn.media.defaults.players = {
        flash: {
                name:                 'flash',
                title:                 'Flash',
                types:                 'flv,mp3,swf',
                mimetype:         'application/x-shockwave-flash',
                pluginspage: 'http://www.adobe.com/go/getflashplayer',
                ieAttrs: {
                        classid: 'clsid:d27cdb6e-ae6d-11cf-96b8-444553540000',
                        type:         'application/x-oleobject',
                        codebase: 'http://fpdownload.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=' + $.fn.media.defaults.flashVersion
                }
        },
        quicktime: {
                name:                 'quicktime',
                title:                 'QuickTime',
                mimetype:         'video/quicktime',
                pluginspage: 'http://www.apple.com/quicktime/download/',
                types:                 'aif,aiff,aac,au,bmp,gsm,mov,mid,midi,mpg,mpeg,mp4,m4a,psd,qt,qtif,qif,qti,snd,tif,tiff,wav,3g2,3gp',
                ieAttrs: {
                        classid: 'clsid:02BF25D5-8C17-4B23-BC80-D3488ABDDC6B',
                        codebase: 'http://www.apple.com/qtactivex/qtplugin.cab'
                }
        },
        realplayer: {
                name:                 'real',
                title:                 'RealPlayer',
                types:                 'ra,ram,rm,rpm,rv,smi,smil',
                mimetype:         'audio/x-pn-realaudio-plugin',
                pluginspage: 'http://www.real.com/player/',
                autoplayAttr: 'autostart',
                ieAttrs: {
                        classid: 'clsid:CFCDAA03-8BE4-11cf-B84B-0020AFBBCCFA'
                }
        },
        winmedia: {
                name:                 'winmedia',
                title:                 'Windows Media',
                types:                 'asx,asf,avi,wma,wmv',
                mimetype:         isFirefoxWMPPluginInstalled() ? 'application/x-ms-wmp' : 'application/x-mplayer2',
                pluginspage: 'http://www.microsoft.com/Windows/MediaPlayer/',
                autoplayAttr: 'autostart',
                oUrl:                 'url',
                ieAttrs: {
                        classid: 'clsid:6BF52A52-394A-11d3-B153-00C04F79FAA6',
                        type:         'application/x-oleobject'
                }
        },
        // special cases
        img: {
                name: 'img',
                title: 'Image',
                types: 'gif,png,jpg'
        },
        iframe: {
                name: 'iframe',
                types: 'html,pdf'
        },
        silverlight: {
                name: 'silverlight',
                types: 'xaml'
        }
};

//
//        everything below here is private
//


// detection script for FF WMP plugin (http://www.therossman.org/experiments/wmp_play.html)
// (hat tip to Mark Ross for this script)
function isFirefoxWMPPluginInstalled() {
        var plugs = navigator.plugins || [];
        for (var i = 0; i < plugs.length; i++) {
                var plugin = plugs[i];
                if (plugin['filename'] == 'np-mswmp.dll')
                        return true;
        }
        return false;
}

var counter = 1;

for (var player in $.fn.media.defaults.players) {
        var types = $.fn.media.defaults.players[player].types;
        $.each(types.split(','), function(i,o) {
                if (isDigit(o[0])) o = 'fn' + o;
                $.fn.media[o] = $.fn.media[player] = getGenerator(player);
                $.fn.media[o+'_player'] = $.fn.media.defaults.players[player];
        });
}

function getTypesRegExp() {
        var types = '';
        for (var player in $.fn.media.defaults.players) {
                if (types.length) types += ',';
                types += $.fn.media.defaults.players[player].types;
        }
        return new RegExp('\\.(' + types.replace(/,/ig,'|') + ')\\b');
}

function getGenerator(player) {
        return function(el, options) {
                return generate(el, options, player);
        };
}

function isDigit(c) {
        return '0123456789'.indexOf(c) > -1;
}

// flatten all possible options: global defaults, meta, option obj
function getSettings(el, options) {
        options = options || {};
        var a, n;
        var $el = $(el);
        var cls = el.className || '';
        // support metadata plugin (v1.0 and v2.0)
        var meta = $.metadata ? $el.metadata() : $.meta ? $el.data() : {};
        meta = meta || {};
        var w = meta.width || parseInt(((cls.match(/\bw:(\d+)/)||[])[1]||0),10) || parseInt(((cls.match(/\bwidth:(\d+)/)||[])[1]||0),10);
        var h = meta.height || parseInt(((cls.match(/\bh:(\d+)/)||[])[1]||0),10) || parseInt(((cls.match(/\bheight:(\d+)/)||[])[1]||0),10);

        if (w) meta.width = w;
        if (h) meta.height = h;
        if (cls) meta.cls = cls;
        
        // crank html5 style data attributes
        var dataName = 'data-';
    for (var i=0; i < el.attributes.length; i++) {
        a = el.attributes[i], n = $.trim(a.name);
        var index = n.indexOf(dataName);
        if (index === 0) {
                        n = n.substring(dataName.length);
                        meta[n] = a.value;
        }
    }

        a = $.fn.media.defaults;
        var b = options;
        var c = meta;

        var p = { params: { bgColor: options.bgColor || $.fn.media.defaults.bgColor } };
        var opts = $.extend({}, a, b, c);
        $.each(['attrs','params','flashvars','silverlight'], function(i,o) {
                opts[o] = $.extend({}, p[o] || {}, a[o] || {}, b[o] || {}, c[o] || {});
        });

        if (typeof opts.caption == 'undefined') opts.caption = $el.text();

        // make sure we have a source!
        opts.src = opts.src || $el.attr('href') || $el.attr('src') || 'unknown';
        return opts;
}

//
//        Flash Player
//

// generate flash using SWFObject library if possible
$.fn.media.swf = function(el, opts) {
        var f, p;
        if (!window.SWFObject && !window.swfobject) {
                // roll our own
                if (opts.flashvars) {
                        var a = [];
                        for (f in opts.flashvars)
                                a.push(f + '=' + opts.flashvars[f]);
                        if (!opts.params) opts.params = {};
                        opts.params.flashvars = a.join('&');
                }
                return generate(el, opts, 'flash');
        }

        var id = el.id ? (' id="'+el.id+'"') : '';
        var cls = opts.cls ? (' class="' + opts.cls + '"') : '';
        var $div = $('<div' + id + cls + '>');

        // swfobject v2+
        if (window.swfobject) {
                $(el).after($div).appendTo($div);
                if (!el.id) el.id = 'movie_player_' + counter++;

                // replace el with swfobject content
                window.swfobject.embedSWF(opts.src, el.id, opts.width, opts.height, opts.flashVersion,
                        opts.expressInstaller, opts.flashvars, opts.params, opts.attrs);
        }
        // swfobject < v2
        else {
                $(el).after($div).remove();
                var so = new SWFObject(opts.src, 'movie_player_' + counter++, opts.width, opts.height, opts.flashVersion, opts.bgColor);
                if (opts.expressInstaller) so.useExpressInstall(opts.expressInstaller);

                for (p in opts.params)
                        if (p != 'bgColor') so.addParam(p, opts.params[p]);
                for (f in opts.flashvars)
                        so.addVariable(f, opts.flashvars[f]);
                so.write($div[0]);
        }

        if (opts.caption) $('<div>').appendTo($div).html(opts.caption);
        return $div;
};

// map flv and mp3 files to the swf player by default
$.fn.media.flv = $.fn.media.mp3 = function(el, opts) {
        var src = opts.src;
        var player = /\.mp3\b/i.test(src) ? opts.mp3Player : opts.flvPlayer;
        var key = opts.flvKeyName;
        src = encodeURIComponent(src);
        opts.src = player;
        opts.src = opts.src + '?'+key+'=' + (src);
        var srcObj = {};
        srcObj[key] = src;
        opts.flashvars = $.extend({}, srcObj, opts.flashvars );
        return $.fn.media.swf(el, opts);
};

//
//        Silverlight
//
$.fn.media.xaml = function(el, opts) {
        if (!window.Sys || !window.Sys.Silverlight) {
                if ($.fn.media.xaml.warning) return;
                $.fn.media.xaml.warning = 1;
                alert('You must include the Silverlight.js script.');
                return;
        }

        var props = {
                width: opts.width,
                height: opts.height,
                background: opts.bgColor,
                inplaceInstallPrompt: opts.silverlight.inplaceInstallPrompt,
                isWindowless: opts.silverlight.isWindowless,
                framerate: opts.silverlight.framerate,
                version: opts.silverlight.version
        };
        var events = {
                onError: opts.silverlight.onError,
                onLoad: opts.silverlight.onLoad
        };

        var id1 = el.id ? (' id="'+el.id+'"') : '';
        var id2 = opts.id || 'AG' + counter++;
        // convert element to div
        var cls = opts.cls ? (' class="' + opts.cls + '"') : '';
        var $div = $('<div' + id1 + cls + '>');
        $(el).after($div).remove();

        Sys.Silverlight.createObjectEx({
                source: opts.src,
                initParams: opts.silverlight.initParams,
                userContext: opts.silverlight.userContext,
                id: id2,
                parentElement: $div[0],
                properties: props,
                events: events
        });

        if (opts.caption) $('<div>').appendTo($div).html(opts.caption);
        return $div;
};

//
// generate object/embed markup
//
function generate(el, opts, player) {
        var $el = $(el);
        var o = $.fn.media.defaults.players[player];
        var a, key, v;

        if (player == 'iframe') {
                o = $('<iframe' + ' width="' + opts.width + '" height="' + opts.height + '" >');
                o.attr('src', opts.src);
                o.css('backgroundColor', o.bgColor);
        }
        else if (player == 'img') {
                o = $('<img>');
                o.attr('src', opts.src);
                if (opts.width)
                        o.attr('width', opts.width);
                if (opts.height)
                        o.attr('height', opts.height);
                o.css('backgroundColor', o.bgColor);
        }
        else if (lameIE) {
                a = ['<object width="' + opts.width + '" height="' + opts.height + '" '];
                for (key in opts.attrs)
                        a.push(key + '="'+opts.attrs[key]+'" ');
                for (key in o.ieAttrs || {}) {
                        v = o.ieAttrs[key];
                        if (key == 'codebase' && window.location.protocol == 'https:')
                                v = v.replace('http','https');
                        a.push(key + '="'+v+'" ');
                }
                a.push('></ob'+'ject'+'>');
                var p = ['<param name="' + (o.oUrl || 'src') +'" value="' + opts.src + '">'];
                for (key in opts.params)
                        p.push('<param name="'+ key +'" value="' + opts.params[key] + '">');
                o = document.createElement(a.join(''));
                for (var i=0; i < p.length; i++)
                        o.appendChild(document.createElement(p[i]));
        }
        else if (opts.standards) {
                // Rewritten to be standards compliant by Richard Connamacher
                a = ['<object type="' + o.mimetype +'" width="' + opts.width + '" height="' + opts.height +'"'];
                if (opts.src) a.push(' data="' + opts.src + '" ');
                if (msie) {
                        for (key in o.ieAttrs || {}) {
                                v = o.ieAttrs[key];
                                if (key == 'codebase' && window.location.protocol == 'https:')
                                        v = v.replace('http','https');
                                a.push(key + '="'+v+'" ');
                        }
                }
                a.push('>');
                a.push('<param name="' + (o.oUrl || 'src') +'" value="' + opts.src + '">');
                for (key in opts.params) {
                        if (key == 'wmode' && player != 'flash') // FF3/Quicktime borks on wmode
                                continue;
                        a.push('<param name="'+ key +'" value="' + opts.params[key] + '">');
                }
                // Alternate HTML
                a.push('<div><p><strong>'+o.title+' Required</strong></p><p>'+o.title+' is required to view this media. <a href="'+o.pluginspage+'">Download Here</a>.</p></div>');
                a.push('</ob'+'ject'+'>');
        }
         else {
         a = ['<embed width="' + opts.width + '" height="' + opts.height + '" style="display:block"'];
         if (opts.src) a.push(' src="' + opts.src + '" ');
         for (key in opts.attrs)
         a.push(key + '="'+opts.attrs[key]+'" ');
         for (key in o.eAttrs || {})
         a.push(key + '="'+o.eAttrs[key]+'" ');
         for (key in opts.params) {
         if (key == 'wmode' && player != 'flash') // FF3/Quicktime borks on wmode
                                        continue;
         a.push(key + '="'+opts.params[key]+'" ');
         }
         a.push('></em'+'bed'+'>');
         }        
        // convert element to div
        var id = el.id ? (' id="'+el.id+'"') : '';
        var cls = opts.cls ? (' class="' + opts.cls + '"') : '';
        var $div = $('<div' + id + cls + '>');
        $el.after($div).remove();
        if (lameIE || player == 'iframe' || player == 'img')
                $div.append(o);
        else
                $div.html(a.join(''));
        
        if (opts.caption)
                $('<div>').appendTo($div).html(opts.caption);
        return $div;
}


})(jQuery);